Coated article having low-E coating with IR reflecting layer(s) and niobium-doped titanium oxide dielectric layer(s) and method of making same

US10213988B2 · kind B2 · utility

Assignee

• Guardian Glass, LLC · US

Inventors

• Guizhen Zhang · Santa Clara, US
• Daniel Schweigert · Fremont, US
• Guowen Ding · San Jose, US
• Daniel Lee · San Jose, US
• Cesar Clavero · San Jose, US
• Scott Jewhurst · Auburn Hills, US
• Gaurav Saraf · Santa Clara, US
• Minh Huu Le · San Jose, US
• Nestor P. Murphy · Beverly Hills, US
• Marcus Frank · Gelnhausen, DE

Key dates

• Filing date: Mar 1, 2018
• Grant date: Feb 26, 2019
• Expiry date: Mar 1, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C17/3681
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A coated article includes a low emissivity (low-E) coating having at least one infrared (IR) reflecting layer of a material such as silver, gold, or the like, and at least one high refractive index layer of or including titanium oxide and at least one additional metal. A doped titanium oxide layer(s) is designed and deposited in a manner so as to be amorphous or substantially amorphous (as opposed to crystalline) in the low-E coating, so as to better withstand optional heat treatment (HT) such as thermal tempering and reduce haze. The high index layer may be a transparent dielectric high index layer in preferred embodiments, which may be provided for antireflection purposes and/or color adjustment purposes, in addition to having thermal stability.